[PySide] User defined signals and slots

[Hedieh Ebrahimi]

I have tried that, but if I transmit function as parameter with no
arguments like this :

self.connect(self.ui.X_Vel_pushButton, QtCore.SIGNAL("pushed()"),
self.askforfileBTN)

then my pushButton doesn´t do anything on click..

def askforfileBTN(self,myLineEdit):

        curFileName=myLineEdit.text()
        (fileName, _selectedFilter) =
QtGui.QFileDialog.getOpenFileName(self,
filter="*.txt;;*.*",viewMode="Detail")
        if fileName!="" and fileName!=curFileName:
            myLineEdit.setText(fileName)


Also when i try the new style as this :
        self.ui.X_Vel_pushButton.pushed.connect(self.askforfileBTN)


I get the following error:

AttributeError: 'PySide.QtGui.QPushButton' object has no attribute 'pushed'


any ideas what i might be doing wrong?

Thanks



On 29 October 2013 15:47, Boris Pohler <boris at pohlers-web.de> wrote:

> When you connect the signal to the slot you call the function
> self.askforfileBTN(self.ui.X_Vel_lineEdit). You want transmit the
> function as parameter instead like
>
> self.connect(self.ui.X_Vel_pushButton, QtCore.SIGNAL("pushed()"),
> self.askforfileBTN)
>
> btw, you are using the old style for connecting signals and slots, you
> better use the new style
>
> self.ui.X_Vel_pushButton.pushed.connect(self.askforfileBTN)
>
> HTH
> Boris
>
> Am Dienstag, den 29.10.2013, 15:27 +0100 schrieb Hedieh Ebrahimi:
> > Hi all,
> >
> >
> > In my User Interface, I have many pushButtons. When one of these
> > pushButtons is clicked, a function is called that will open a
> > QFileDialog that will let you browse for a file as below:
> >
> >  def askforfile(self):
> >
> >         curFileName=self.ui.X_Vel_lineEdit.text()
> >         (fileName, _selectedFilter) =
> > QtGui.QFileDialog.getOpenFileName(self,
> > filter="*.txt;;*.*",viewMode="Detail")
> >
> >
> >
> > As I have so many of these browse buttons, I was thinking to edit the
> > " askforfile" method so that it would take the QEditLine that is
> > operating on as an argument.
> >
> >
> > Then I understood that Clicked which is a pushButton predefined thing,
> > doesn´t accept arguments and I can not have the following line in my
> > code.
> >
> >
> >
> self.ui.X_Vel_pushButton.pushed.connect(self.askforfileBTN(self.ui.X_Vel_lineEdit))
> >
> >
> > as the self.askforfileBTN(self.ui.X_Vel_lineEdit)) has
> > self.ui.X_Vel_lineEdit as its argument.
> >
> >
> > , so finally I defined the following signal and then i connected it.
> >
> > pushed=QtCore.Signal(self.ui.X_Vel_lineEdit)
> >
> > self.connect(self.ui.X_Vel_pushButton, QtCore.SIGNAL("pushed()"),
> > self.askforfileBTN(self.ui.X_Vel_lineEdit))
> >
> >
> > and now what happens is that the the fileDialog opens even before the
> > main Window opens and before i even click the push button.
> >
> >
> > Any ideas on what I might be doing wrong?
> >
> >
> > Thanks
> >
> > _______________________________________________
> > PySide mailing list
> > PySide at qt-project.org
> > http://lists.qt-project.org/mailman/listinfo/pyside
>
>
>
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